//@version=5
strategy("Master 5:30 PM Sweep Strategy", overlay=true, initial_capital=10000, default_qty_type=strategy.percent_of_equity, default_qty_value=10)

// Inputs
session_time = input.session("1200-1400", title="Reference Session Time (UTC/Broker Time)")
rr_ratio = input.float(2.0, title="Risk to Reward Ratio")
buffer_ticks = input.int(5, title="Stop Loss Buffer (Ticks)")

// Determine if we are inside the session
in_session = not na(time(timeframe.period, session_time))

var float session_high = na
var float session_low = na
var float sweep_high = na
var float sweep_low = na
var string state = "idle" // "idle", "swept_high", "swept_low", "done"
var int last_trade_day = -1

current_day = dayofweek

// Reset session levels
if in_session
    if not in_session[1] or current_day != current_day[1]
        session_high := high
        session_low := low
        state := "idle"
    else
        session_high := math.max(nz(session_high, high), high)
        session_low := math.min(nz(session_low, low), low)

// Trade execution window (after reference session ends)
after_session = not in_session and not na(session_high) and not na(session_low)

// Avoid trading on weekends
is_weekend = (dayofweek == sunday or dayofweek == saturday)

if after_session and not is_weekend and state != "done"
    if state == "idle"
        if close > session_high
            state := "swept_high"
            sweep_high := high
        else if close < session_low
            state := "swept_low"
            sweep_low := low
    else if state == "swept_high"
        sweep_high := math.max(sweep_high, high)
        if close < session_high
            // Sweep high completed, close back inside -> Enter Short
            sl = sweep_high + (buffer_ticks * syminfo.mintick)
            risk = sl - close
            tp = close - (risk * rr_ratio)
            strategy.entry("Short Sweep", strategy.short)
            strategy.exit("Exit Short", "Short Sweep", stop=sl, limit=tp)
            state := "done"
    else if state == "swept_low"
        sweep_low := math.min(sweep_low, low)
        if close > session_low
            // Sweep low completed, close back inside -> Enter Long
            sl = sweep_low - (buffer_ticks * syminfo.mintick)
            risk = close - sl
            tp = close + (risk * rr_ratio)
            strategy.entry("Long Sweep", strategy.long)
            strategy.exit("Exit Long", "Long Sweep", stop=sl, limit=tp)
            state := "done"

// Visualizing levels
plot(after_session ? session_high : na, color=color.green, style=plot.style_line, title="Session High")
plot(after_session ? session_low : na, color=color.red, style=plot.style_line, title="Session Low")